Bug 704959

Thanks for the bug report.  We have reviewed the information you have provided above, and there is some additional information we require that will be helpful in our diagnosis of this issue.

Please add drm.debug=0x04 to the kernel command line, restart computer, and attach

* your X server config file (/etc/X11/xorg.conf, if available),
* X server log file (/var/log/Xorg.*.log)
* output of the dmesg command, and
* system log (/var/log/messages)

to the bug report as individual uncompressed file attachments using the bugzilla file attachment link above.

We will review this issue again once you've had a chance to attach this information.

Thanks in advance.

Created attachment 499616 [details]
only file in /etc/X11/xorg.conf.d/

Created attachment 499617 [details]
X server log file from `/var/log/Xorg.0.log`

Created attachment 499619 [details]
output of `dmesg` when adding `drm.debug=0x04` to Linux kernel command line

Created attachment 499621 [details]
system log from `/var/log/messages`

(In reply to comment #1)

[…]

> Please add drm.debug=0x04 to the kernel command line, restart computer, and
> attach
> 
> * your X server config file (/etc/X11/xorg.conf, if available),
> * X server log file (/var/log/Xorg.*.log)
> * output of the dmesg command, and
> * system log (/var/log/messages)
>
> to the bug report as individual uncompressed file attachments using the
> bugzilla file attachment link above.

Thank you for the quick reply. I attached the files you requested.

> We will review this issue again once you've had a chance to attach this
> information.

Thank you!

I just wanted to note that adding `drm.debug=0x04` to the Linux kernel command line seemed to have improved the responsiveness of the graphical system. But that is just a feeling.

And maybe to explain some messages of the logs, I tried to update the system which did not work. Firefox was opened in parallel and it seemed the system started to swap at some time and was very unresponsive. Opening a second `gnome-terminal` got the GNOME session to crash and it asked me to log out. But there was just a black screen then – probably the GPU could not be reset – and I copied the files from `tty0`.

I did not know how to restart GDM and a `halt` could not shut down the system and I had to push the power button for 10 s.

That graphical corruption is also reported on https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/745608 and https://bugs.freedesktop.org/show_bug.cgi?id=36326 ...

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